A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

Browse source 
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] cio: unsolicited interrupts during sense pgid.
  [S390] cio: no path after machine check.
  [S390] cio: kernel stack overflow.
  [S390] dasd: fix device shutdown process.
  [S390] broken copy_in_user function.
This commit is contained in:
Linus Torvalds 2006-08-31 14:42:07 -07:00
commit dd1a47c21e
9 changed files with 217 additions and 143 deletions
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33
arch/s390/lib/uaccess.S
View file

@ -88,30 +88,31 @@ __copy_to_user_asm:
.globl __copy_in_user_asm
# %r2 = from, %r3 = n, %r4 = to
__copy_in_user_asm:
ahi %r3,-1
jo 6f
sacf 256
bras 1,1f
mvc 0(1,%r4),0(%r2)
0: mvc 0(256,%r4),0(%r2)
la %r2,256(%r2)
la %r4,256(%r4)
1: ahi %r3,-256
jnm 0b
2: ex %r3,0(%r1)
sacf 0
slr %r2,%r2
br 14
3: mvc 0(1,%r4),0(%r2)
bras %r1,4f
0: ahi %r3,257
1: mvc 0(1,%r4),0(%r2)
la %r2,1(%r2)
la %r4,1(%r4)
ahi %r3,-1
jnz 1b
2: lr %r2,%r3
br %r14
3: mvc 0(256,%r4),0(%r2)
la %r2,256(%r2)
la %r4,256(%r4)
4: ahi %r3,-256
jnm 3b
4: lr %r2,%r3
5: ex %r3,4(%r1)
sacf 0
6: slr %r2,%r2
br %r14
.section __ex_table,"a"
.long 0b,3b
.long 2b,3b
.long 3b,4b
.long 1b,2b
.long 3b,0b
.long 5b,0b
.previous
.align 4

37
arch/s390/lib/uaccess64.S
View file

@ -88,30 +88,31 @@ __copy_to_user_asm:
.globl __copy_in_user_asm
# %r2 = from, %r3 = n, %r4 = to
__copy_in_user_asm:
aghi %r3,-1
jo 6f
sacf 256
bras 1,1f
mvc 0(1,%r4),0(%r2)
0: mvc 0(256,%r4),0(%r2)
la %r2,256(%r2)
la %r4,256(%r4)
1: aghi %r3,-256
jnm 0b
2: ex %r3,0(%r1)
sacf 0
slgr %r2,%r2
br 14
3: mvc 0(1,%r4),0(%r2)
bras %r1,4f
0: aghi %r3,257
1: mvc 0(1,%r4),0(%r2)
la %r2,1(%r2)
la %r4,1(%r4)
aghi %r3,-1
jnm 3b
4: lgr %r2,%r3
sacf 0
jnz 1b
2: lgr %r2,%r3
br %r14
3: mvc 0(256,%r4),0(%r2)
la %r2,256(%r2)
la %r4,256(%r4)
4: aghi %r3,-256
jnm 3b
5: ex %r3,4(%r1)
sacf 0
6: slgr %r2,%r2
br 14
.section __ex_table,"a"
.quad 0b,3b
.quad 2b,3b
.quad 3b,4b
.quad 1b,2b
.quad 3b,0b
.quad 5b,0b
.previous
.align 4